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Evaluation of novel hybrid membranes for carbon capture

Effects of industrial gas impurities on the performance of hybrid membranes for gas separation

Date:
November 17, 2017
Source:
Tokyo University of Agriculture and Technology
Summary:
Hybrid materials known as mixed matrix membranes are considered a promising approach to capture carbon dioxide and mitigate against global warming. These materials are derived from a polymer combined with porous nanoparticles. We show that materials prepared using porous organic polymers are resilient to the acidic impurities present in industrial gas streams, whereas other hybrid materials fail. This means that they can be effective in carbon capture applications where these impurities are present.
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Carbon dioxide (CO2) capture remains a priority in many countries as the world seeks to address climate change. In particular, the most recent report from the Intergovernmental Panel on Climate Change shows that geological storage of carbon dioxide is required for all scenarios that can meet 430 -- 550 ppm CO2 atmospheric concentrations (Working Group III, IPCC 5th Assessment Report, 2014).

Membrane technology is one approach being investigated globally for the cost-effective capture of the carbon dioxide. However, to be successful, the membrane materials require high gas permeability and selectivity as well as long-term performance stability. Although a large number of gas separation membrane materials have been reported for CO2 capture in the last few decades, most have been tested under ideal conditions. However, real industrial gas streams contain impurities such as water vapor, hydrogen sulfide, sulfur dioxide and nitrogen oxide.

We have investigated the resilience of hybrid mixed matrix membranes in the presence of these impurities. We found that the hybrid membranes prepared using porous organic polymer nanoparticles were resilient to these impurities, whereas those containing metal organic framework nanoparticles were less stable.

This means that they can be effective in gas separation applications such as natural gas sweetening, biogas purification and post-combustion carbon capture, when these acidic gases are present. These results will allow scientists and engineers to select the right materials for these applications.

The research was funded by the Science and Industry Endowment fund and the Grant-in-Aid for Young Scientists (B) (Grant No. 17K14850), the Ministry of Education, Culture, Sports, Science and Technology of Japan.


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Materials provided by Tokyo University of Agriculture and Technology. Note: Content may be edited for style and length.


Cite This Page:

Tokyo University of Agriculture and Technology. "Evaluation of novel hybrid membranes for carbon capture." ScienceDaily. ScienceDaily, 17 November 2017. <www.sciencedaily.com/releases/2017/11/171117085211.htm>.
Tokyo University of Agriculture and Technology. (2017, November 17). Evaluation of novel hybrid membranes for carbon capture. ScienceDaily. Retrieved May 18, 2024 from www.sciencedaily.com/releases/2017/11/171117085211.htm
Tokyo University of Agriculture and Technology. "Evaluation of novel hybrid membranes for carbon capture." ScienceDaily. www.sciencedaily.com/releases/2017/11/171117085211.htm (accessed May 18, 2024).

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